Hariprasad Shenai fbe8077687 cxgb4: Avoids race and deadlock while freeing tx descriptor ...

There could be race between t4_eth_xmit() and t4_free_sge_resources() while
freeing tx descriptors, take txq lock in t4_free_sge_resources(). We need
to stop the xmit frame path which runs in bottom half context while
unloading the driver using _bh variant of the lock. This is to prevent
the deadlock between xmit and driver unload.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2016-04-26 13:23:57 -04:00

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appletalk

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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-04-23 18:51:33 -04:00

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cxgb4: Avoids race and deadlock while freeing tx descriptor

2016-04-26 13:23:57 -04:00

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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

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